'\" t
.\"
.TH "\fBMARIADB-SHOW\fR" "1" "3 September 2024" "MariaDB 11.4" "MariaDB Database System"
.\" -----------------------------------------------------------------
.\" * set default formatting
.\" -----------------------------------------------------------------
.\" disable hyphenation
.nh
.\" disable justification (adjust text to left margin only)
.ad l
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.\" * MAIN CONTENT STARTS HERE *
.\" -----------------------------------------------------------------
.\" mariadb-show
.\" databases: displaying
.\" displaying: database information
.\" tables: displaying
.\" columns: displaying
.\" showing: database information
.SH "NAME"
mariadb-show \- display database, table, and column information (mariadb-show is now a symlink to mariadb-show)
.SH "SYNOPSIS"
.HP \w'\fBmariadb-show\ [\fR\fB\fIoptions\fR\fR\fB]\ [\fR\fB\fIdb_name\fR\fR\fB\ [\fR\fB\fItbl_name\fR\fR\fB\ [\fR\fB\fIcol_name\fR\fR\fB]]]\fR\ 'u
\fBmariadb-show [\fR\fB\fIoptions\fR\fR\fB] [\fR\fB\fIdb_name\fR\fR\fB [\fR\fB\fItbl_name\fR\fR\fB [\fR\fB\fIcol_name\fR\fR\fB]]]\fR
.SH "DESCRIPTION"
.PP
The
\fBmariadb-show\fR
client can be used to quickly see which databases exist, their tables, or a table's columns or indexes\&.
.PP
\fBmariadb-show\fR
provides a command\-line interface to several SQL
SHOW
statements\&. The same information can be obtained by using those statements directly\&. For example, you can issue them from the
\fBmariadb\fR
client program\&.
.PP
Invoke
\fBmariadb-show\fR
like this:
.sp
.if n \{\
.RS 4
.\}
.nf
shell> \fBmariadb-show [\fR\fB\fIoptions\fR\fR\fB] [\fR\fB\fIdb_name\fR\fR\fB [\fR\fB\fItbl_name\fR\fR\fB [\fR\fB\fIcol_name\fR\fR\fB]]]\fR
.fi
.if n \{\
.RE
.\}
.sp
.RS 4
.ie n \{\
\h'-04'\(bu\h'+03'\c
.\}
.el \{\
.sp -1
.IP \(bu 2.3
.\}
If no database is given, a list of database names is shown\&.
.RE
.sp
.RS 4
.ie n \{\
\h'-04'\(bu\h'+03'\c
.\}
.el \{\
.sp -1
.IP \(bu 2.3
.\}
If no table is given, all matching tables in the database are shown\&.
.RE
.sp
.RS 4
.ie n \{\
\h'-04'\(bu\h'+03'\c
.\}
.el \{\
.sp -1
.IP \(bu 2.3
.\}
If no column is given, all matching columns and column types in the table are shown\&.
.RE
.PP
The output displays only the names of those databases, tables, or columns for which you have some privileges\&.
.PP
If the last argument contains shell or SQL wildcard characters (\(lq*\(rq,
\(lq?\(rq,
\(lq%\(rq, or
\(lq_\(rq), only those names that are matched by the wildcard are shown\&. If a database name contains any underscores, those should be escaped with a backslash (some Unix shells require two) to get a list of the proper tables or columns\&.
\(lq*\(rq
and
\(lq?\(rq
characters are converted into SQL
\(lq%\(rq
and
\(lq_\(rq
wildcard characters\&. This might cause some confusion when you try to display the columns for a table with a
\(lq_\(rq
in the name, because in this case,
\fBmariadb-show\fR
shows you only the table names that match the pattern\&. This is easily fixed by adding an extra
\(lq%\(rq
last on the command line as a separate argument\&.
.PP
\fBmariadb-show\fR
supports the following options, which can be specified on the command line or in the
[mariadb-show]
and
[client]
option file groups\&.
\fBmariadb-show\fR
also supports the options for processing option files described.
.sp
.RS 4
.ie n \{\
\h'-04'\(bu\h'+03'\c
.\}
.el \{\
.sp -1
.IP \(bu 2.3
.\}
.\" mariadb-show: help option
.\" help option: mariadb-show
\fB\-\-help\fR,
\fB\-?\fR
.sp
Display a help message and exit\&.
.RE
.sp
.RS 4
.ie n \{\
\h'-04'\(bu\h'+03'\c
.\}
.el \{\
.sp -1
.IP \(bu 2.3
.\}
.\" mariadb-show: character-sets-dir option
.\" character-sets-dir option: mariadb-show
\fB\-\-character\-sets\-dir=\fR\fB\fIpath\fR\fR,
\fB\-c\fR \fIpath\fR\fR
.sp
The directory where character sets are installed\&.
.RE
.sp
.RS 4
.ie n \{\
\h'-04'\(bu\h'+03'\c
.\}
.el \{\
.sp -1
.IP \(bu 2.3
.\}
.\" mariadb-show: compress option
.\" compress option: mariadb-show
\fB\-\-compress\fR,
\fB\-C\fR
.sp
Compress all information sent between the client and the server if both support compression\&.
.RE
.sp
.RS 4
.ie n \{\
\h'-04'\(bu\h'+03'\c
.\}
.el \{\
.sp -1
.IP \(bu 2.3
.\}
.\" mariadb-show: count option
.\" count option: mariadb-show
\fB\-\-count\fR
.sp
Show the number of rows per table\&. This can be slow for non\-MyISAM
tables\&.
.RE
.sp
.RS 4
.ie n \{\
\h'-04'\(bu\h'+03'\c
.\}
.el \{\
.sp -1
.IP \(bu 2.3
.\}
.\" mariadb-show: debug option
.\" debug option: mariadb-show
\fB\-\-debug[=\fR\fB\fIdebug_options\fR\fR\fB]\fR,
\fB\-# [\fR\fB\fIdebug_options\fR\fR\fB]\fR
.sp
Write a debugging log\&. A typical
\fIdebug_options\fR
string is 'd:t:o,\fIfile_name\fR'. The default is 'd:t:o'.
.RE
.sp
.RS 4
.ie n \{\
\h'-04'\(bu\h'+03'\c
.\}
.el \{\
.sp -1
.IP \(bu 2.3
.\}
.\" mariadb-show: debug-check option
.\" debug-check option: mariadb-show
\fB\-\-debug\-check\fR
.sp
Print some debugging information when the program exits\&.
.RE
.sp
.RS 4
.ie n \{\
\h'-04'\(bu\h'+03'\c
.\}
.el \{\
.sp -1
.IP \(bu 2.3
.\}
.\" mariadb-show: debug-info option
.\" debug-info option: mariadb-show
\fB\-\-debug\-info\fR
.sp
Print debugging information and memory and CPU usage statistics when the program exits\&.
.RE
.sp
.RS 4
.ie n \{\
\h'-04'\(bu\h'+03'\c
.\}
.el \{\
.sp -1
.IP \(bu 2.3
.\}
.\" mariadb-show: default-auth option
.\" default-auth option: mariadb-show
\fB\-\-default\-auth=\fR\fB\fIname\fR
.sp
Default authentication client-side plugin to use\&.
.RE
.sp
.RS 4
.ie n \{\
\h'-04'\(bu\h'+03'\c
.\}
.el \{\
.sp -1
.IP \(bu 2.3
.\}
.\" mariadb-show: default-character-set option
.\" default-character-set option: mariadb-show
\fB\-\-default\-character\-set=\fR\fB\fIcharset_name\fR\fR
.sp
Use
\fIcharset_name\fR
as the default character set\&.
.RE
.sp
.RS 4
.ie n \{\
\h'-04'\(bu\h'+03'\c
.\}
.el \{\
.sp -1
.IP \(bu 2.3
.\}
.\" mariadb-show: defaults-extra-file option
.\" defaults-extra-file option: mariadb-show
\fB\-\-defaults\-extra\-file=\fR\fB\fIfilename\fR\fR
.sp
Set \fB\fIfilename\fR\fR as the file to read default options from after the global defaults files has been
read\&.  Must be given as first option\&.
.RE
.sp
.RS 4
.ie n \{\
\h'-04'\(bu\h'+03'\c
.\}
.el \{\
.sp -1
.IP \(bu 2.3
.\}
.\" mariadb-show: defaults-file option
.\" defaults-file option: mariadb-show
\fB\-\-defaults\-file=\fR\fB\fIfilename\fR\fR
.sp
Set \fB\fIfilename\fR\fR as the file to read default options from, override global defaults files\&.
Must be given as first option\&.
.RE
.sp
.RS 4
.ie n \{\
\h'-04'\(bu\h'+03'\c
.\}
.el \{\
.sp -1
.IP \(bu 2.3
.\}
.\" mariadb-show: defaults-group-suffix option
.\" defaults-group-suffix option: mariadb-show
\fB\-\-defaults\-group\-suffix=\fR\fB\fIsuffix\fR\fR
.sp
In addition to the groups named on the command line, read groups that have the given suffix\&.
.RE
.sp
.RS 4
.ie n \{\
\h'-04'\(bu\h'+03'\c
.\}
.el \{\
.sp -1
.IP \(bu 2.3
.\}
.\" mariadb-show: host option
.\" host option: mariadb-show
\fB\-\-host=\fR\fB\fIhost_name\fR\fR,
\fB\-h \fR\fB\fIhost_name\fR\fR
.sp
Connect to the MariaDB server on the given host\&.
.RE
.sp
.RS 4
.ie n \{\
\h'-04'\(bu\h'+03'\c
.\}
.el \{\
.sp -1
.IP \(bu 2.3
.\}
.\" mariadb-show: keys option
.\" keys option: mariadb-show
\fB\-\-keys\fR,
\fB\-k\fR
.sp
Show table indexes\&.
.RE
.sp
.RS 4
.ie n \{\
\h'-04'\(bu\h'+03'\c
.\}
.el \{\
.sp -1
.IP \(bu 2.3
.\}
.\" mariadb-show: no-defaults option
.\" no-defaults option: mariadb-show
\fB\-\-no\-defaults\fR
.sp
Do not read default options from any option file\&. This must be given as the
first argument\&.
.RE
.sp
.RS 4
.ie n \{\
\h'-04'\(bu\h'+03'\c
.\}
.el \{\
.sp -1
.IP \(bu 2.3
.\}
.\" mariadb-show: password option
.\" password option: mariadb-show
\fB\-\-password[=\fR\fB\fIpassword\fR\fR\fB]\fR,
\fB\-p[\fR\fB\fIpassword\fR\fR\fB]\fR
.sp
The password to use when connecting to the server\&. If you use the short option form (\fB\-p\fR), you
\fIcannot\fR
have a space between the option and the password\&. If you omit the
\fIpassword\fR
value following the
\fB\-\-password\fR
or
\fB\-p\fR
option on the command line,
\fBmariadb-show\fR
prompts for one\&.
.sp
Specifying a password on the command line should be considered insecure\&. You can use an option file to avoid giving the password on the command line\&.
.RE
.sp
.RS 4
.ie n \{\
\h'-04'\(bu\h'+03'\c
.\}
.el \{\
.sp -1
.IP \(bu 2.3
.\}
.\" mariadb-show: pipe option
.\" pipe option: mariadb-show
\fB\-\-pipe\fR,
\fB\-W\fR
.sp
On Windows, connect to the server via a named pipe\&. This option applies only if the server supports named\-pipe connections\&.
.RE
.sp
.RS 4
.ie n \{\
\h'-04'\(bu\h'+03'\c
.\}
.el \{\
.sp -1
.IP \(bu 2.3
.\}
.\" mariadb-show: plugin-dir option
.\" plugin-dir option: mariadb-show
\fB\-\-plugin\-dir=\fIdir_name\fR
.sp
Directory for client-side plugins\&.
.RE
.sp
.RS 4
.ie n \{\
\h'-04'\(bu\h'+03'\c
.\}
.el \{\
.sp -1
.IP \(bu 2.3
.\}
.\" mariadb-show: port option
.\" port option: mariadb-show
\fB\-\-port=\fR\fB\fIport_num\fR\fR,
\fB\-P \fR\fB\fIport_num\fR\fR
.sp
The TCP/IP port number to use for the connection\&.
Forces --protocol=tcp when specified on the command line without other connection properties\&.
.RE
.sp
.RS 4
.ie n \{\
\h'-04'\(bu\h'+03'\c
.\}
.el \{\
.sp -1
.IP \(bu 2.3
.\}
.\" mariadb-show: protocol option
.\" protocol option: mariadb-show
\fB\-\-protocol={TCP|SOCKET|PIPE|MEMORY}\fR
.sp
The connection protocol to use for connecting to the server\&. It is useful when the other connection parameters normally would cause a protocol to be used other than the one you want\&.
.RE
.sp
.RS 4
.ie n \{\
\h'-04'\(bu\h'+03'\c
.\}
.el \{\
.sp -1
.IP \(bu 2.3
.\}
.\" mariadb-show: print-defaults option
.\" print-defaults option: mariadb-show
\fB\-\-print\-defaults\fR
.sp
Print the program argument list and exit\&.
This must be given as the first argument\&.
.RE
.sp
.RS 4
.ie n \{\
\h'-04'\(bu\h'+03'\c
.\}
.el \{\
.sp -1
.IP \(bu 2.3
.\}
.\" mariadb-show: show-table-type option
.\" show-table-type option: mariadb-show
\fB\-\-show\-table\-type\fR,
\fB\-t\fR
.sp
Show a column indicating the table type, as in
SHOW FULL TABLES\&. The type is
BASE TABLE
or
VIEW\&.
.RE
.sp
.RS 4
.ie n \{\
\h'-04'\(bu\h'+03'\c
.\}
.el \{\
.sp -1
.IP \(bu 2.3
.\}
.\" mariadb-show: socket option
.\" socket option: mariadb-show
\fB\-\-socket=\fR\fB\fIpath\fR\fR,
\fB\-S \fR\fB\fIpath\fR\fR
.sp
For connections to
localhost, the Unix socket file to use, or, on Windows, the name of the named pipe to use\&.
Forces --protocol=socket when specified on the command line without other connection properties; on Windows, forces --protocol=pipe\&.
.RE
.sp
.RS 4
.ie n \{\
\h'-04'\(bu\h'+03'\c
.\}
.el \{\
.sp -1
.IP \(bu 2.3
.\}
.\" mariadb-show: SSL options
.\" SSL options: mariadb-show
\fB\-\-ssl\fR
.sp
Enable SSL for connection (automatically enabled with other flags). Disable with
\fB\-\-skip-ssl\fR\&.
.RE
.sp
.RS 4
.ie n \{\
\h'-04'\(bu\h'+03'\c
.\}
.el \{\
.sp -1
.IP \(bu 2.3
.\}
.\" mariadb-show: SSL CA option
.\" SSL CA option: mariadb-show
\fB\-\-ssl\-ca=\fIname\fR
.sp
CA file in PEM format (check OpenSSL docs, implies
\fB\-\-ssl\fR)\&.
.RE
.sp
.RS 4
.ie n \{\
\h'-04'\(bu\h'+03'\c
.\}
.el \{\
.sp -1
.IP \(bu 2.3
.\}
.\" mariadb-show: SSL CA Path option
.\" SSL CA Path option: mariadb-show
\fB\-\-ssl\-capath=\fIname\fR
.sp
CA directory (check OpenSSL docs, implies
\fB\-\-ssl\fR)\&.
.RE
.sp
.RS 4
.ie n \{\
\h'-04'\(bu\h'+03'\c
.\}
.el \{\
.sp -1
.IP \(bu 2.3
.\}
.\" mariadb-show: SSL Cert option
.\" SSL Cert option: mariadb-show
\fB\-\-ssl\-cert=\fIname\fR
.sp
X509 cert in PEM format (check OpenSSL docs, implies
\fB\-\-ssl\fR)\&.
.RE
.sp
.RS 4
.ie n \{\
\h'-04'\(bu\h'+03'\c
.\}
.el \{\
.sp -1
.IP \(bu 2.3
.\}
.\" mariadb-show: SSL Cipher option
.\" SSL Cipher option: mariadb-show
\fB\-\-ssl\-cipher=\fIname\fR
.sp
SSL cipher to use (check OpenSSL docs, implies
\fB\-\-ssl\fR)\&.
.RE
.sp
.RS 4
.ie n \{\
\h'-04'\(bu\h'+03'\c
.\}
.el \{\
.sp -1
.IP \(bu 2.3
.\}
.\" mariadb-show: SSL Key option
.\" SSL Key option: mariadb-show
\fB\-\-ssl\-key=\fIname\fR
.sp
X509 key in PEM format (check OpenSSL docs, implies
\fB\-\-ssl\fR)\&.
.RE
.sp
.RS 4
.ie n \{\
\h'-04'\(bu\h'+03'\c
.\}
.el \{\
.sp -1
.IP \(bu 2.3
.\}
.\" mariadb-show: SSL Crl option
.\" SSL CRL option: mariadb-show
\fB\-\-ssl\-crl=\fIname\fR
.sp
Certificate revocation list (check OpenSSL docs, implies
\fB\-\-ssl\fR)\&.
.RE
.sp
.RS 4
.ie n \{\
\h'-04'\(bu\h'+03'\c
.\}
.el \{\
.sp -1
.IP \(bu 2.3
.\}
.\" mariadb-show: SSL Crlpath option
.\" SSL Crlpath option: mariadb-show
\fB\-\-ssl\-crlpath=\fIname\fR
.sp
Certificate revocation list path (check OpenSSL docs, implies
\fB\-\-ssl\fR)\&.
.RE
.sp
.RS 4
.ie n \{\
\h'-04'\(bu\h'+03'\c
.\}
.el \{\
.sp -1
.IP \(bu 2.3
.\}
.\" mariadb-show: SSL Verify Server Cert option
.\" SSL Verify Server Cert option: mariadb-show
\fB\-\-ssl\-verify\-server\-cert\fR
.sp
Verify server's "Common Name" in its cert against hostname used when connecting. This option is disabled by default\&.
.RE
.sp
.RS 4
.ie n \{\
\h'-04'\(bu\h'+03'\c
.\}
.el \{\
.sp -1
.IP \(bu 2.3
.\}
.\" mariadb-show: status option
.\" status option: mariadb-show
\fB\-\-status\fR,
\fB\-i\fR
.sp
Display extra information about each table\&.
.RE
.sp
.RS 4
.ie n \{\
\h'-04'\(bu\h'+03'\c
.\}
.el \{\
.sp -1
.IP \(bu 2.3
.\}
.\" mariadb-show: user option
.\" user option: mariadb-show
\fB\-\-user=\fR\fB\fIuser_name\fR\fR,
\fB\-u \fR\fB\fIuser_name\fR\fR
.sp
The MariaDB user name to use when connecting to the server\&.
.RE
.sp
.RS 4
.ie n \{\
\h'-04'\(bu\h'+03'\c
.\}
.el \{\
.sp -1
.IP \(bu 2.3
.\}
.\" mariadb-show: verbose option
.\" verbose option: mariadb-show
\fB\-\-verbose\fR,
\fB\-v\fR
.sp
Verbose mode\&. Print more information about what the program does\&. This option can be used multiple times to increase the amount of information\&.
.RE
.sp
.RS 4
.ie n \{\
\h'-04'\(bu\h'+03'\c
.\}
.el \{\
.sp -1
.IP \(bu 2.3
.\}
.\" mariadb-show: version option
.\" version option: mariadb-show
\fB\-\-version\fR,
\fB\-V\fR
.sp
Display version information and exit\&.
.RE
.SH "COPYRIGHT"
.br
.PP
Copyright 2007-2008 MySQL AB, 2008-2010 Sun Microsystems, Inc., 2010-2024 MariaDB Foundation
.PP
This documentation is free software; you can redistribute it and/or modify it only under the terms of the GNU General Public License as published by the Free Software Foundation; version 2 of the License.
.PP
This documentation is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.
.PP
You should have received a copy of the GNU General Public License along with the program; if not, write to the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1335 USA or see http://www.gnu.org/licenses/.
.sp
.SH "SEE ALSO"
For more information, please refer to the MariaDB Knowledge Base, available online at https://mariadb.com/kb/
.SH AUTHOR
MariaDB Foundation (http://www.mariadb.org/).
